hlsl.params.default.nonident.negative.frag
ERROR: 0:1: ''' : expected 
ERROR: 0:1: 'b' : invalid parameter after default value parameters 
ERROR: 0:1: ')' : Expected 
ERROR: 0:1: 'function parameter list' : Expected 
ERROR: 0:1: 'declaration' : Expected 
(2): error at column 0, HLSL parsing failed.
ERROR: 6 compilation errors.  No code generated.


Shader version: 500
gl_FragCoord origin is upper left


Linked fragment stage:


Shader version: 500
gl_FragCoord origin is upper left

SPIR-V is not generated for failed compile or link